Edge 840 losing sensor connection when activity paused

danny-thomson

I saw an earlier thread on this topic that did not offer a solution and advice there suggested opening new thread for ongoing issues. 

This is a recurring issue whenever a ride is paused. Connection is lost with the sensors, in particular speed/cadence and power meters. HR strap is not affected.

On road this is Assioma pedals. Sensor will fail to reconnect after cafe stops, etc. The unit is not switched off or in sleep mode during the stop. 

However it is track riding that causes most frustration. I will start the unit and connect Garmin speed/cadence sensor and Rotor power cranks. After only a few minutes the sensors will disconnect. So if I am participating in track events I need to reconnect sensors each time I enter the track, which is very inconvenient. The activity is paused between drills and races and auto sleep is disabled for this activity profile, because sleep mode also disconnects sensors. 

I have tried full factory reset and switching off auto sleep, neither of which resolve the issue. I am using Solar version of the 840 on firmware version 29.22. 

Given that this is a known problem, has this been addressed by Garmin support?

TIA

  • 0

    Yeah.  IDK.  Sensors like speed, cadence, PM,  go to sleep after the bike has been stationary for a while so those connections are lost.  The HR strap doesn't sleep since it stays awake as long as it's being worn.  The thing is, it seems the Edge is only open to connect to sensors for a period after it's been turned on.  After that, it won't automatically connect anymore so I have to do it manually.  Agree it's a pain. Turning the Edge off rather than pausing it may be a workaround, though it takes a minute for it to boot up.   

  • 0 in reply to looigi

    I opened a ticket with Garmin who responded very quickly to requested logs and also ask that I participate in the beta software program to allow them to monitor my activities using firmware 30.11. 

    So let’s see if anything comes of that. 

    I will post my updates here if they will be of any benefit to other users.